Dear All,
I would to expose my own example since I use PESQ and other speech =
quality
algorithms for several years.
First, as Graham already mentioned, you can publish your PESQ =
estimations if
you use this algorithm for research purposes (not commercial). For =
instance,
I worked several years at Orange Labs where I used a licensed PESQ to
publish my own research. Then, I moved to a university where I used the =
free
version of PESQ.
Another important point; Stefan, are you sure that Loizou's PESQ
implementation fulfill the PESQ implementation guide (ITU-T Rec. =
P.862.3)?
If you did not check that (which takes time since you need the databases
included in the ITU-T Suppl. 23), you cannot really publish your result =
as
PESQ estimations.
In any case, I think that it is not allowed to publish a Matlab version =
of
the PESQ algorithms. I would propose to any person interesting to use =
PESQ
to download the ITU C-code, to compile it and to verify is correct
implementation.
Last, for any other person you are interested in free speech quality
algorithms, you can use the following ones:
- Frequency weighted segmental SNR
- Enhanced Modified Bark Spectral Distortion (EMBSD)
- Weighted Spectral Slope (WSS)
See an evaluation of these algorithms there:
N. C=F4t=E9, V. Gautier-Turbin, and S. M=F6ller, =93Evaluation of =
instrumental
quality measures for wideband-transmitted speech,=94 in Proc. 8th
ITGFachtagung Sprachkommunikation, Aachen, Germany, October 8=9610 2008.
[Online]. Available : =
http://www.vde-verlag.de/data/prcd.php?docid=3D453120021
Best regards,
Nicolas C=F4t=E9
--
Nicolas C=F4t=E9
Institut d'=C9lectronique de Micro=E9lectronique et de Nanotechnologie =
(IEMN)
Institut Sup=E9rieur de l'=C9lectronique et du Num=E9rique (ISEN)
41, boulevard Vauban - 59046 Lille
Tel : +33(0)3 59 57 44 26
Fax : +33(0)3 20 30 40 51
-----------------------------------------------------------
-----Message d'origine-----
De=A0: AUDITORY - Research in Auditory Perception
[mailto:AUDITORY@xxxxxxxx De la part de Paris Smaragdis
Envoy=E9=A0: jeudi 25 juillet 2013 06:39
=C0=A0: AUDITORY@xxxxxxxx
Objet=A0: Re: [AUDITORY] PESQ
Hi Stefan,
As I understand it, the licenses you point to are either for
developing/using your own implementation of PESQ, or for using the =
official
implementation. If you use a third party implementation it is their
responsibility to obtain the proper licenses, not yours. Perhaps Graham, =
can
help clarify Opticom's position on this.
Paris
On Jul 24, 2013, at 5:44 AM, Stefan Bleeck <bleeck@xxxxxxxx> wrote:
> Dear Omid, your doubt qualifies you as a scientist :) I could not
> believe it either...
> Here is the web site:
> http://www.opticom.de/licensing/pesq.php
>=20
> These are the exact numbers (obtained from Opticom by email):
> PEXQ SW Suite incl. POLQA (executable) regular is 8.900,00 EUR ./.
> academic discount 30 %. (To clarify: it's a one-off, not per annum) It
> was made clear to me that I cannot publish results obtained using my
> PESQ code in an academic journal without a license.
>=20
> The algorithms are freely available (I got them from Loizou's
> fantastic "speech enhancement" book), but that apparently doesn't mean
> that we can use them for free...
>=20
> All of that now raises the question: what is the best speech quality
> algorithm that we can use for free. My current favourite: segSNR. But
> I am not sure any more that this actually IS free. What do you think?
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> Stefan
>=20
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> On 24 July 2013 05:44, Sadjadi, Omid <sadjadi@xxxxxxxx> wrote:
>> Can you point us to the document that has this information? I highly
doubt this.
>>=20
>> The paper describing PESQ is publicly available (to IEEE members), =
which
means everyone can implement and use this metric:
>>=20
>> A.W. Rix, J.G., Beerends, M.P. Hollier and A.P. Hekstra, "Perceptual
evaluation of speech quality (PESQ)-a new method for speech quality
assessment of telephone networks and codecs," in Proc. IEEE ICASSP, Salt
Lake City, UT, May 2001, pp.749-752.
>>=20
>> Omid
>> ________________________________________
>> From: AUDITORY - Research in Auditory Perception
[AUDITORY@xxxxxxxx on behalf of Stefan Bleeck [bleeck@xxxxxxxx
>> Sent: Tuesday, July 23, 2013 9:43 AM
>> To: AUDITORY@xxxxxxxx
>> Subject: [AUDITORY] PESQ
>>=20
>> I just found out that the _academic_ use of PESQ (perceptual
>> evaluation of speech quality, ITU recommendation P.862), that is
>> described with MATLAB source code in Loizou's Speech Enhancement
>> book, requires a license that costs around $7000 per year. I write
>> this as a warning for others against using it (unless you happen to
>> have the spare cash), because we didn't know this and did a lot of
>> work with it that we now can't publish.
>>=20
>>=20
>> --
>> Dr. Stefan Bleeck
>> Hearing and Balance Centre
>> Institute of Sound and Vibration Research
>> Faculty of Engineering and the Environment
>> University of Southampton, SO17 1BJ, UK
>> Room 4093, Tizard building (13)
>> bleeck@xxxxxxxx Tel.: 02380 596682
>=20
>=20
>=20
> --=20
> Dr. Stefan Bleeck
> Hearing and Balance Centre
> Institute of Sound and Vibration Research
> Faculty of Engineering and the Environment
> University of Southampton, SO17 1BJ, UK
> Room 4093, Tizard building (13)
> bleeck@xxxxxxxx Tel.: 02380 596682